Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc529d9dab4ee2eb…

MALICIOUS

PDF

33.8 KB Created: 2021-07-20 01:32:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 8a580d3334104315361b45bdeb3ed69d SHA-1: 8c0ac06036a93b5a21444c59ca889b9795428344 SHA-256: fc529d9dab4ee2eb23d3a068c39669ae8c4c23fc3af261fdf81ef5c7b90cca1a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a prominent link to 'http://netcdn.tw/app/406889139/free-coin-master-spins-game-hack' and a call-to-action phrase, suggesting a lure for users to download potentially malicious content or engage in phishing. The ML classifier strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the presence of embedded URLs and the document's deceptive content indicate an attempt to trick users into visiting a malicious site, likely for malware distribution or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9946

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://netcdn.tw/app/406889139/free-coin-master-spins-game-hack In PDF document text
    • http://greenpasturesfarm.com.au/images/how-to-get-tiktok-famous-free_GM835599320.pdfIn PDF document text
    • http://greenpasturesfarm.com.au/images/is-minecraft-free_GM479516143.pdfIn PDF document text
    • http://greenpasturesfarm.com.au/images/coin-master-free-spins-app_GM406889139.pdfIn PDF document text
    • http://greenpasturesfarm.com.au/images/free-robux-codes-2021-not-used_GM431946152.pdfIn PDF document text
    • http://greenpasturesfarm.com.au/images/best-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • http://greenpasturesfarm.com.au/images/free-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://greenpasturesfarm.com.au/images/free-minecraft-accounts-2021_GM479516143.pdfIn PDF document text
    • http://greenpasturesfarm.com.au/images/minecraft-free-online-games_GM479516143.pdfIn PDF document text
    • http://greenpasturesfarm.com.au/images/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://greenpasturesfarm.com.au/images/how-to-hack-people-on-roblox_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002eb9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EB9 23300 bytes
SHA-256: 3ac79e056d95b35bbfcf1d321552d8818d902436f456989eae62ee8e2042ae1f
font_01_sfnt_off0000639c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x639C 17884 bytes
SHA-256: dbba0adc3b1b7bb8b2e5e51fec5d28ab169e2f7a165ed2a14d616932af559aea